The Wacker Neuson Top Weldment Cover is a genuine OEM component designed for the HI750, HI900, and HI260 series mobile indirect fired air heaters. Sourced directly from Wacker Neuson, this part meets the exact specifications of the original cover used on diesel, natural gas, and LP-fueled heater configurations — including skid-mounted and surge-brake variants. It fits across a broad range of HI750 and HI900 model configurations, as well as the HI260 oil-fired heater with tank, making a widely applicable structural replacement for this equipment family.
Key Features
- OEM Structural Integrity — Manufactured to Wacker Neuson's original weld and dimensional specifications, ensuring the cover sits flush and supports the heater enclosure as intended from the factory.
- Direct Drop-In Replacement — Replaces the original top weldment cover using existing mounting points; no rework or custom fitting needed during installation.
- Broad Heater Series Coverage — Compatible with HI750, HI900, and HI260 series indirect air heaters across diesel, natural gas, LP, and dual-fuel configurations, including skid-mounted and trailer-mounted units.
- Protects Internal Components — The top weldment cover shields the heater's burner assembly and heat exchanger from weather exposure, debris ingress, and physical damage during transport and operation.
- Combustion Safety Compliance — A correctly fitted cover maintains the designed airflow and exhaust pathway within the heater enclosure; a damaged or missing cover can disrupt combustion dynamics and create unsafe operating conditions.
The top weldment cover forms the upper structural shell of the indirect air heater unit. It encloses and protects the internal combustion and heat exchange components from the elements, physical impact, and airborne debris — all of which are common on construction and industrial job sites. When this cover becomes damaged, bent, or corroded, it can compromise the heater's ability to manage airflow correctly, potentially affecting burner efficiency and operator safety. Replacing it promptly with a genuine OEM part like the Wacker Neuson 5000181874 restores the enclosure to its original operating condition.
Part Details
| Part Number | 5000181874 |
|---|---|
| Old Part Number | 0181874 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Top Weldment Cover |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI750 DGM HEATER-INDIRECT | HI750GM | 5000620859, 5000620930 |
| Mobile Indirect Fired Air Heat er, Diesel | HI750D | 5000620856, 5000620923, 5000620924 |
| HI 750GM HD-Mobile Indirect Ai r Heater-Surge, -40 | HI750GMHD | 5000620969 |
| HI750G HEATER-INDIRECT | HI750G | 5000620857, 5000620928, 5000620929 |
| Factory-Installed Options | Factory-Installed Options | 5200004152 |
| HI900 Heater-DGM,Srg,-40 | HI900DGM | 5200014221, 5200014222, 5200014165, 5200014166 |
| HI 900D Heater-Indirect | HI900D | 5200014158, 5200014159, 5200014160 |
| Skid Indirect Air Heaters Natu ral Gas | HI900G | 5200014161 |
| HI 900G Heater-Indirect,3x16 | HI900 G | 5200014163, 5200014164 |
| HI260 HEATER,OIL WITH TANK | HI260 | 5200018503 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
